Dublin Institute of Technology was a major third-level institution in Dublin, Ireland. On 1 January 2019 DIT was dissolved and its functions were transferred to the Technological University Dublin, as TU Dublin City Campus. The institution began with the establishment of the first technical education institution in Ireland, in 1887, and progressed through various legal and governance models, culminating in autonomy under a statute of 1992.

Technological University Dublin or TU Dublin is Ireland's first technological university, established on 1 January 2019, and with a history stretching back to 1887 through the amalgamated Dublin Institute of Technology which progressed from the first technical education institution in Ireland, the City of Dublin Technical Schools. It is the second-largest third-level institution in Ireland, with a student population of 28,500.